Bulletin 167 



Gelatin stab 486 



Gelatin colonies 4^7 



Broth 4S7 



Potato blocks 488 



Milk 488 



Acid production in milk 488 



Table 41. Acid production in milk * . . . 489 



Table 42. Average acid production in milk in cc. N/1 



per liter 490 



Litmus milk 491 



Starch jelly 491 



Cohn's solution 491 



Uschinsky solution 491 



Fermi's solution 492 



Silicate jelly 492 



Sodium chlorid in bouillon 492 



Growth in bouillon over chloroform 492 



Maple sap sterilized 492 



Insterilized sap 493 



Artificial maple sap 493 



Physical and biochemical features 494 



Gas production in milk 494 



Carbohydrate broth 4^4 



Table 43. Acid production in carbohydrate broths.... 49G 



Table 44. Gas production in carbohydrate broths 498 



Table 45. Proportion of carbon dioxid to total gas.... 4'.'^ 



Fermentation of potato starch 499 



Gas production in modified Uschinsky solution contain- 

 ing carbohydrates 499 



Ammonia production 500 



Table 46. Ammonia produced in nutrient, broth 500 



Nitrate reduction 500 



Indol production 501 



Production of phenol 501 



Hydrogen sulphid production 502 



Toleration of acids 502 



Toleration of sodium hydroxid 



Optimum reaction 504 



Temperature relations 505 



Growth in carbon dioxid atmosphere 505 



Desiccation 



